<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>异步函数顺序调用</title>
    <link rel="stylesheet" href="css/bootstrap.min.css">
    <link rel="stylesheet" type="text/css" href="../CSS/Js-Add-task4.css">
</head>

<body>
<div class="outermost">
    <div class="Center">
        <button class="btn btn-primary text-center" id="Button">调用a函数</button>
    </div>
</div>

<script language="JavaScript" src="../JS/Js-Add-task4.js"></script>
</body>
</html>